During an action potential, the membrane potential ____.
A)becomes more negative as sodium enters the cell
B)becomes more negative as potassium leaves the cell
C)becomes more positive as sodium enters the cell
D)becomes more positive as sodium leaves the cell
E)remains at -70 mV until threshold is reached

Question

During an action potential, the membrane potential ____. ​
A)becomes more negative as sodium enters the cell
B)becomes more negative as potassium leaves the cell
C)becomes more positive as sodium enters the cell
D)becomes more positive as sodium leaves the cell
E)remains at -70 mV until threshold is reached

Quizplus · Accepted Answer

During an action potential, the membrane potential becomes more positive as sodium enters the cell. This is due to the opening of voltage-gated sodium channels, which allows sodium ions to flow into the cell and depolarize the membrane.

During an Action Potential, the Membrane Potential ____